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Write an expression for magnetic potenti...

Write an expression for magnetic potential energy of a magnetic dipole kept in a uniform magnetic field and explain the terms.

Text Solution

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`U = - vec m . vec B or U = mBcos0`
U - Magnetic potential energy.
m - magnetic moment of the magnetic dipole.
B - Uniform magnetic field
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Knowledge Check

  • A magnetic needle is kept in a non uniform magneitc field it experiences

    A
    a force but not a torque
    B
    a force and a troque
    C
    neither a force nor a torque
    D
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  • A charged particle placed in a uniform magnetic field experiences :

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    A force in the direction of the field
    B
    A force opposite to the direction of the field
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    D
    No force at all

  • A charged particle placed in a uniform magnetic field experiences :

    A
    A force in the direction of the field
    B
    A force opposite to the direction of the field
    C
    A force perpendicular to the direction of the field
    D
    No force at all

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